Nowak , Ireneusz, and Marta Sagan-Martko. “Service Dogs in the Customs and Fiscal Service”. Studia Prawno-Ekonomiczne 138 (May 13, 2026): 31–73. Accessed May 14, 2026. https://www.journals.ltn.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/3803.